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People who like reply on India: How are the Kolkata East-West Line Tunnel Engineers fighting the TBM in water cavern problem?
Pankaj on India: How are the Kolkata East-West Line Tunnel Engineers fighting the TBM in water cavern problem? (): According to information I have their tbm tail brushes are not in good condition
cover tunnel photo by: Matt Brown from London, England / CC BY
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